geddes



(No Model.)

J. W. GEDDES.

SKYLIGHT.

No. 248,645. Patented 001;. 25,1881.

WITNESSES. lNvENToR ATTORNEY.

N. PETERS, Phokl Llhngrnplxer. wgshlngcn, D. C.

rren kSmau-is PATENT Guinee.

JAMES W. GEDDES, OF BALTIMORE, MARYLAND.

SKYLIGHT.

SPECIFICATION forming part of Letters Patent No. 248,645, dated October 25, 1881.

Application filed June 7, 1881. (No model.)

To all whom it may concern:

Be it known that I, JAMES lV. GEDDES, of Baltimore city, State of Maryland, have invented certain new and useful Improvements in Skylights; and I hereby declare the same to be fully, clearly, and exactly described as follows, reference being had to the accompanying drawings, in which- Figure l is a central vertical sectional view ofthe device, and Fig. 2 is a perspective view of the same.

My invention has for its object to provide a skylight which will not leak, and in which ample provision shall be made for the play of the parts due to contraction and expansion under changes of temperature.

To these ends I provide a cross-beam havingledgcs upon which the panes rest, and combine therewith a sheet-metal cover for the joint, strips of rubber or equivalent packing material being suitably attached to the edges of the cover. The edges of the glass are not allowed to touch the central rib, and are free to play back and forth as they expand and contract. No putty is or need be used at the joint, whereby a great saving of time and labor results.

In the drawings, A is the cross-beam having a central rib, B, adapted to project vertically upward between the panes b b. In case the cross-beams are of metal, the ribs are formed integral therewith by casting or rolling; but if the beams are of wood, andsuch they should be, the ribsB are, by preference, made of plate metal letinto saw-kerfs in the beams. The ribs may, however, be of wood, and formed in one piece with the beams.

C is a sheet-metal plate bent so as to form a gutter, h, on either side of the beam A, to which it issecured by bolts aI or otherwise. This plateby preference, passes over the top of the :rib B; but it may also be made in two parts, one of which is attached to either side of the beam or rib. The edges of the plate G are folded back upon themselves, and then bent parallel with the plate, as shown at c. Strips of rubber, d, are inserted in the intermediate space and securely retained by indenting or punching the metal. The cover-plate D, also of sheet metal, is provided with a similar edging of rubber, d, and is secured to the rib B by bolts c. Should it be desired the joint may be puttied, as shown by a dotted line,f. The plates O and D are curved or bent, so that when the panes are in place the rubber strips d are pressed closely upon the glass, making water-tightjoints on either side.

The gutters h are provided in order to conduct any water which might leak under the edges of the cover-plate D away to the eaves.

Instead of forming the central rib wholly of wood or of metal it may consistof awooden rib having a metallic plate let into it to strengthen and stiften it.

The salient features of my invention, effecting as they do most important results, add little or nothing to the cost of the parts, and a great economy of time and labor is reached by the method ofjoining the parts.

What I claim isl. In a skylight,a cross-beam having shoulders for sustaining the panes, and provided also with interior and exterior plates having rubber or equivalent elastic edgings adapted to clamp the glass and form a water-tight joint, as set forth.

2. In combination with the cross-bar and panes, the interior and exterior plates having their edges@ folded, as described, and securing the rubber strips d.

3. In combination with the cross-beam, having the metallic rib B, the plate C, folded on either side of the same and having gutters h, the panes b, and cover-plate having elastic edges, as set forth.

4. In combination with the cross-beam having rib B, the lower plate, C, folded over the JAMES W. GEDDES.

Witnesses CHARLES A. VAILE, R. D. WILLrAMs. 

